shairplay | Apple airplay and raop protocol server

The library has experimental support for handling fairplay handshake (used in for example screen mirroring) using a playfair library that is licensed under GPLv3. This can be enabled by adding ```--with-playfair``` to the. src/lib/base64.* - base64 encoder/decoder src/lib/dnssd.* - dnssd helper functions src/lib/http_parser.* - HTTP parser from joyent (nginx fork) src/lib/http_request.* - Request parser that uses http_parser src/lib/http_response.* - Extremely simple HTTP response serializer src/lib/httpd.* - Generic HTTP/RTSP server src/lib/logger.* - Logging related functions src/lib/netutils.* - Mostly socket related code src/lib/raop.* - Main RAOP handler, handles all RTSP stuff src/lib/raop_rtp.* - Handles the RAOP RTP related stuff (UDP/TCP) src/lib/raop_buffer.* - Parses and buffers RAOP packets, resend logic here src/lib/rsakey.* - Decrypts and parses the RSA key to bigints src/lib/rsapem.* - Converts the RSA PEM key to DER encoded bytes src/lib/sdp.* - Extremely simple RAOP specific SDP parser src/lib/utils.* - Utils for reading a file and handling strings. AirTV-Qt/main.cpp - Initializes the application AirTV-Qt/mainapplication.cpp - Creates the tray icon and starts RAOP AirTV-Qt/raopservice.cpp - Handles all communication with the library AirTV-Qt/raopcallbackhandler.cpp - Converts C callbacks to Qt callbacks AirTV-Qt/audiooutput.cpp - Takes care of the actual audio output.